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\section{Sequences}
\label{sec:sequence}


\subsection{Align module}
\label{sec:align-module}

\begin{itemize}
\item \texttt{cost\_2} and \texttt{cost\_3} align two and three sequences and
  return an integer cost.
\item \texttt{myers}?
\item \texttt{extract\_edited\_2} performs a crazy extraction of the aligned
  sequence obtained in the last \texttt{cost\_2} call
\item \texttt{align\_2} and \texttt{align\_3} perform an alignment and return
  it, along with the cost
\item \texttt{median\_2} and \texttt{median\_3} calculate median sequences for
  sequences of equal length
\end{itemize}



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